171 lines
4.0 KiB
C
171 lines
4.0 KiB
C
/*
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
// FIXME: add this to rscript + fix skybox problem
|
|
// Modified for use with tomazquake by BramBo
|
|
|
|
#include "quakedef.h"
|
|
|
|
// glmsurface_t == msurface_t
|
|
|
|
|
|
// bloody mirrors
|
|
qboolean mirror;
|
|
mplane_t *mirror_plane;
|
|
cvar_t r_mirroralpha = {"r_mirroralpha","1", true};
|
|
msurface_t *mirrorchain = NULL;
|
|
qboolean mirror_render; // true when reflections are being rendered
|
|
|
|
void Mirror_Scale (void)
|
|
{
|
|
if (mirror_plane->normal[2])
|
|
glScalef ( 1,-1, 1);
|
|
else
|
|
glScalef (-1, 1, 1);
|
|
|
|
glCullFace(GL_BACK);
|
|
}
|
|
|
|
|
|
void Mirror_Clear (void)
|
|
{
|
|
if (gl_clear.value)
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
else
|
|
glClear (GL_DEPTH_BUFFER_BIT);
|
|
|
|
gldepthmin = 0;
|
|
gldepthmax = 0.5;//XFX
|
|
glDepthFunc (GL_LEQUAL);
|
|
//glDepthFunc (GL_ALWAYS);
|
|
}
|
|
|
|
/*
|
|
=============
|
|
R_Mirror
|
|
|
|
code written by MH - http://mhquake.quakesrc.org/
|
|
=============
|
|
*/
|
|
extern cvar_t gl_multitexture;
|
|
float r_base_world_matrix[16];
|
|
void R_RenderScene (void);
|
|
|
|
void R_Mirror (void)
|
|
{
|
|
float d;
|
|
msurface_t *s;
|
|
entity_t *ent;
|
|
float mirror_alpha;
|
|
glpoly_t *p;
|
|
float *v;
|
|
int i;
|
|
|
|
|
|
// these should stay the same for all mirror planes
|
|
vec3_t oldvieworg;
|
|
vec3_t oldviewangles;
|
|
vec3_t oldvpn;
|
|
|
|
|
|
// don't have infinite reflections if 2 mirrors are facing each other (looks ugly but
|
|
// better than hanging the engine)
|
|
mirror_render = true;
|
|
|
|
ent = &cl_entities[cl.viewentity];
|
|
|
|
if (cl_numvisedicts < MAX_VISEDICTS)
|
|
{
|
|
cl_visedicts[cl_numvisedicts] = ent;
|
|
cl_numvisedicts++;
|
|
}
|
|
|
|
memcpy (r_base_world_matrix, r_world_matrix, sizeof (r_base_world_matrix));
|
|
|
|
VectorCopy (r_refdef.vieworg, oldvieworg);
|
|
VectorCopy (r_refdef.viewangles, oldviewangles);
|
|
VectorCopy (vpn, oldvpn);
|
|
|
|
// r_mirroralpha values of more than about 0.65 don't really look well or have any effect
|
|
mirror_alpha = r_mirroralpha.value * (1.0 / 1.5);
|
|
|
|
for (s = mirrorchain; s; s = s->texturechain)
|
|
{
|
|
mirror_plane = s->plane;
|
|
|
|
d = PlaneDiff (oldvieworg, mirror_plane);
|
|
VectorMA (oldvieworg, -2 * d, mirror_plane->normal, r_refdef.vieworg);
|
|
|
|
d = DotProduct (oldvpn, mirror_plane->normal);
|
|
VectorMA (oldvpn, -2 * d, mirror_plane->normal, vpn);
|
|
|
|
r_refdef.viewangles[0] = -asin (vpn[2]) / M_PI * 180;
|
|
r_refdef.viewangles[1] = atan2 (vpn[1], vpn[0]) / M_PI * 180;
|
|
r_refdef.viewangles[2] = -oldviewangles[2];
|
|
|
|
gldepthmin = 0.5;
|
|
gldepthmax = 1;
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
glDepthFunc (GL_LEQUAL);
|
|
|
|
// everything to do with the render has been moved into r_renderscene, so that the
|
|
// full render reflects properly in the skybox...
|
|
R_RenderScene ();
|
|
|
|
gldepthmin = 0;
|
|
gldepthmax = 0.5;
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
glDepthFunc (GL_LEQUAL);
|
|
glMatrixMode (GL_PROJECTION);
|
|
|
|
if (mirror_plane->normal[2])
|
|
glScalef (1, -1, 1);
|
|
else
|
|
glScalef (-1, 1, 1);
|
|
|
|
glCullFace (GL_FRONT);
|
|
glMatrixMode (GL_MODELVIEW);
|
|
glLoadMatrixf (r_base_world_matrix);
|
|
|
|
glColor4f (1, 1, 1, mirror_alpha);
|
|
|
|
glBindTexture (GL_TEXTURE_2D, s->texinfo->texture->gl_texturenum);
|
|
|
|
p = s->polys;
|
|
v = p->verts[0];
|
|
|
|
glBegin (GL_POLYGON);
|
|
|
|
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
|
|
{
|
|
glTexCoord2fv (&v[3]);
|
|
glVertex3fv (v);
|
|
}
|
|
|
|
glEnd ();
|
|
glColor4f (1, 1, 1, 1);
|
|
}
|
|
|
|
mirrorchain = NULL;
|
|
mirror = false;
|
|
mirror_render = false;
|
|
}
|
|
|
|
|